Trolley head



Oct. 29, 1929. w. H. WELLIAMSON TROLLEY HEAD Filed June 16, 1928 Gttormy Patented Get. 29, 1929 i UNITED STATES PATENT QFFICE WILLIAM H. WILLIAMSON, F EAMILTOIT, ONTARIO, CANADA TROLLEY HEAD Application filed June 18. 1828. Serial No. 285,834.

This invention relates to trolley heads such each portion 10 is a hollow semi-circular boss as are used on the trolleys of street cars and ii which covers a bearing hole 15, these two the like, liOltl-i being: alined to receive the shaft 16.

The principal object of the invention to The confronting faces of the members 10 are provide a self-lubricating trolley wheel recessed as at 17 so that the trolley wheel 18 5 which is so constructed and arranged that ats in these recessed faces on the shaft 16. prior to the parts being as embled they are 'iahis trolley wheel has the usual concave filled with a suitable graphite or other heavy periphery and is provided with a series of lubricant packing, the arrangement of parts lubricant receiving pockets 19. The membeing carried out with a. view of preventing hers 10 at their upper ends are flared apart the washing out by rain or the like of such indicated at 20 to receive the trolley wire. lubricant so that after being put into service llet'ore a semblingz the hollow bosses and the wheel remains lubricated for a long time. the pockets are packed with lubricant A second important object of the invcnafter which the parts are assen'ibled. It will 15 tion is to provide an improved head of this be seen that the recess prevents the lubricant description which can be readily disassemfrom if-cine" washed out and that the wheel, bled for the renewal of lubricant or the re lav fitting; closely in such recess. also aids in placement of worn parts. It will further be seen that the lubricant lVith the above and other objects in view at such points that all moving 29 will he hereinafter apparent. the invention pa rts norougrhly lubricated. 7

consists in general of certain novel details Thu has thus been provided a simple and of construction and combinations of parts etticient device of the kind described and for hereinafter fully described. illustrated in the the nirpose specified. accompanying drawings and specifically It is obvious that minor changes may be 25 claimed. -e in the form and construction of the in- In the accompanying drawings like characytion without departing from the material ters of reference indicate like parts in the lit thereof. it is not, therefore. desired several views. saio: to conl'ne the invention to the exact form Figure 1 is a. side view of a tro y head herein shown and de crihcd. but it desired 30 constructed in accordance with this invcnto include all such as properly come within tion. tie scope claimed.

Figure 2 is a front view thereof. Having thus described the invention, what Figure 3 is a section on the line 3 B of is claimed as new. is: Figure 2. A trolley head consisting of a pair of co 35 QE s a s ction on the line -l --l of operating: harp sides having alined shat l ie'ure 1. bea ing hole hollow bosses each covering a In carnving out this invention there is: 1'( pectivesh: fl holc.ashaftpas ingthrough provided a pair of similar side members said bearing holes and into said bosses. and which. when assembled. form the t icy a trel ev ww-cl mounted on said shaft. the

4o harp. Each of these member-i consists of (irilfi'tllft'lgr-tf -i; ()l said harp sides being a circular body portion 1) trom wh ch ere rercscd to receive the trolley .vheel. said tend n hal round Flltl li ll. t n. l wh el having its side portions fitting c oscly of these shanks contacting. when the parts: t 1... reces es and heinp; provided ith lo are assembled. and the shanks and harp head hrieant receiving poc icets. portions being held together by a screw 12. In ter tin'ionv whereof I affix my signature. This shank fits into the trolley pole in the 'ILLIAM H. VILLIAM usual manner and the halves of the shank are provided with registering openings 13 or the key which is used to hold the head on 5b he hollow trolley pole. On the outside of 

